Lock nut



` April 1o, 1934. K Y'QUNG ETAL 1,954,114

LOCK NUT Filed May 2, '195s ATTORNEY Patented Apr.1o,1934' d 1,954,114

1,954,114 Loox NUT Karl Gottlob Young and Hermann Veit, Philadelphia,Pa., assignors of one-half to Rudolph Rodgers, Toms River, N. J., andone-half to Daisy Haslett, Mount Holly,`N. J.

Application May 2, 1933, Serial No. 668,953

2 Claims. (Cl. 151-25) Our invention relates to a new and useful lockvided the hole or opening 5 in which is adapted nut of the general typedisclosed in our Patent to be seated the locking element 6. The nut 1No. 1,861,202, said nut being of a construction is provided on theopposite faces thereof with the which permits its application to a screwor bolt grooves or counter-bores 7 in which are adapted 5 and which atthe same time prevents the nutV to seat the springs 8 and the closuremembers 9. 60-

from being unthreaded or from working loose The springs 8 are providedwith the angularly dedue to vibrations or other forces to which theected portions 19 and llwhile the nut isprovided nut may be subjected.with the holes 12 which communicate with the Our invention furtherrelates to a lock nut of grooves or counter-bores 7. The locking memthischaracter, the construction of which includes ber 6 is also providedwith the holes 13 and the 65 means for unthreading the nut at will.closure members 9 are provided with the holes 14. To the above ends, ourinvention consists of In assembling the nut construction shown, the aninternally threaded nut provided with a lonlocking member 6 is iirstpositioned in the opengitudinal opening in the wall thereof and coming 5and the deflected ends 10 or 11 of the springs 15 municating with thethreads of said nut, a locking 8 are made to engage the holes 13 at theopposite 70 member positioned in said opening, `means for ends of thelocking member 6 while the other de tensioning said locking member intoits operative iected ends of the springs 8 are inserted into the lockingposition with respect to a bolt, or the like, opposite holes 12 in thebody of the nut 1. By

on which the nut is threaded, provision being this means, the lockingmember 6 is yieldably made for displacement of said locking memberretained in the position shown in Figs. 1, 2 and 75` from its operativeposition to permit the thread- 3, that is the position in which thelocking meming of the nut. ber 6, whether it be threaded as at 15 orwhether Our invention further consists of other novel it be of a plainround, square, triangular, or other features of construction andadvantage, all as shape, abuts against or engages the threads 3 of Ihereinafter described and claimed in connection the bolt 4 on which thenut is threaded, as shown 804 with the accompanying drawing in which: inFigs. 1 to 5, inclusive. The closure members Fig. 1 represents a planview of either the top 9 are then applied to either face of the nut 1 orthe bottom face of a lock nut embodying our to close the grooves 7, asbest seen in Fig. 5, with invention. the holes l4'in the closure members9 in substanr Fig. 2 represents a top plan view of the nut tialregistration with that part of the opening 853i shown in Fig. 1, theupper closure member being 5 which is occupied by the locking member 6removed to show internal construction. when said locking member ismaintained in its Fig. 3 is a view similar to Fig. 2 showing theoperative position by the springs 8, as best seen opposite face of thenut shown in Fig. 1. in Fig. 1. The completely assembled nut is then YFig. 4 is a fragmentary sectional view, on an' threaded on the bolt 4and may be turned in a 90-v enlarged scale, on line 4-4 of Fig. 2. righthand direction only and the nut is prevented Fig. 5 is a sectional viewon line 5 5 of Fig. 2. from working loose by itself or from being turnedf Fig. 6 represents a diagrammatic view illusby external force in thereverse or unthreadtrating the manner of displacing the locking ingdirection by the wedging of the locking memto member from its operativeposition to permit un ber 6 against the threads 3 of the bolt 4. While95" threading ofthe nut. this wedging action is suicient to prevent theFig, '7 represents a plan view of one form of unthreading of the nut, itis sometimes desirable tensioning member which is employed to maintothread the locking member 6 as at 15 so that tain the locking element inits operative position the thread 15 of the locking member 6 will havet0 prevent the unthreading of the nut. positive engagement with thethreads 3 on the 100 Fig. 8 represents a plan view, on an enlarged bolt4, thus making it abSGtBly impossible to scale, of one form of thelocking member formunthread the nut even though the threads on ing partof the construction. the bolt 4 or the locking member 6 may be Referringto the drawing in which like refstripped, for the reason that thestripping of 5o erence characters indicate like parts, l designates suchthreads will produce a wedging action which a nut, which may be square,hexagonal, or of will further tighten the nut against unthreading. anyother type, and which is internally threaded In order to unthread thenut, a pin or other imas at 2 for engagement with the threads 3 of aplement 16 is inserted through the hole 14 in bolt or the like 4. In thewall of the nut 1 and either of the closures 9 and the locking member 6communicating with the threads 2 thereof is pre- 1s then displaced fromthe position illustrated in 110 Figs. 1 to 3, inclusive, that is fromthe position in which the locking member 6 engages the bolt 4 to theout-of-the-way inoperative position at the other end of the opening 5wherein the locking member 6 is entirely out of engagement with the bolt4 and in which position the nut may be unthreaded (see Fig. 6). In orderto aid in accomplishing this result, the opening 5 is preferably of atapered shape and the springs 8 so engage the locking member 6 as tohold it normally in the narrow portion of the opening 5 in whichposition the locking member 6 projects inwardly towards the bolt 4 toprevent the unthreading of the nut in the manner described, the lockingmember 6 being pushed by means of the implement 16 into the Widerportion of the opening 5 in which position the locking member 6 does notproject towards or engage the bolt 4 and hence permits the unthreadingof the nut. While in the drawings We have illustrated a particular formof spring 8, a particular form of closure 9, a particular form oflocking member 6, and a particular form of opening 5 in which thelocking member 6 is adapted to operate, it is to g be understood thatthe items mentioned can be changed in the details of their constructionwithout departure from the spirit or scope of the invention and that ourinvention primarily resides in the provision of an opening in the wallof the nut, a suitable locking member adapted to be moved therein froman operative to an inoperative position, together with means fornormally tensioning said locking member in its operative position, withprovision for displacement of said locking member from its operative toits inoperative position from without, and without the necessity ofdismantling or otherwise interfering with the construction of the nut.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. A lock nut comprising an internally threaded portion having groovesin the opposite faces thereof and a longitudinal opening in a wallthereof communicating with said grooves and with the threads of saidbody portion, a roller positioned in said opening, and a pair ofcircular springs positioned in said grooves, each of said springs havingone end thereof anchored in the body portion of said nut and having theother end thereof engaging the juxtaposed end of said roller.

2. A lock nut comprising an internally threaded portion having groovesin the opposite faces thereof and a longitudinal opening in a wallthereof communicating with said grooves and with the threads of saidbody portion, a roller positioned in said opening, a pair of circularsprings positioned in said grooves, each of said springs having one endthereof anchored in the body portion of said nut and having the otherend thereof engaging the juxtaposed end of said roller, and closures forsaid grooves, each of said closures having a hole therein registeringwith -f the end of said opening nearest said threads.

HERMANN VEIT. KARL GOTTLOB YOUNG.

